/*
 * $QNXLicenseC:
 * Copyright 2008, QNX Software Systems. 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"). You 
 * may not reproduce, modify or distribute this software except in 
 * compliance with the License. You may obtain a copy of the License 
 * at: http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" basis, 
 * WITHOUT WARRANTIES OF ANY KIND, either express or implied.
 *
 * This file may contain contributions from others, either as 
 * contributors under the License or as licensors under other terms.  
 * Please review this entire file for other proprietary rights or license 
 * notices, as well as the QNX Development Suite License Guide at 
 * http://licensing.qnx.com/license-guide/ for other information.
 * $
 */





#include "startup.h"


//
// Calculate a checksum.
//
unsigned
calc_cksum(const void *start, unsigned nbytes) {
	unsigned		sum = 0;
	const uint8_t	*cp = start;

	while(nbytes > 0) {
		sum += *cp++;
		--nbytes;
	}

	return sum & 0xFF;
}

__SRCVERSION("calc_cksum.c $Rev: 657836 $");
